JPH10315821A - Lock device for slide rail - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the damage of a cover, and to prevent the fault of sliding performance of an upper rail by forming a front and a rear edges of a lock releasing lever, which contact on a cover, into a curve, which is gradually enlarged downward. SOLUTION: An opening part of a lower rail 3 is covered with a cover 30. A front edge 21 and a rear edge 22 of a lever 2, with which the cover 30 contact, are respectively formed into a curve so as to be gradually enlarged downward. The lever 2 is fitted to an upper rail 4, and slid in the fore and aft direction with the upper rail 4. At this stage of slide or at the time of pushing an operation part 20, the lever 2 is projected from inside of the lower rail 3 through a slit of the cover 30. A front and a rear edges 21, 22 of the lever 2 at the projecting part are operated so as to lift the cover 30 when the upper rail 4 is slid or when the operating part 20 is operated, and downward bite of the cover is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock device for a slide rail for adjusting the front / rear position of an automobile seat (seat).

[0002]

2. Description of the Related Art A lock device of this type locks an upper rail to a lower rail by engaging a lock piece provided on a seat side upper rail with a lock hole provided on a vehicle floor side lower rail. is there.

The above-mentioned lock piece has a structure in which the lock piece is moved upward by a lever pivotally pivoted to the upper rail side to release the locked state, and the lever protrudes upward from the lower rail, An operation section is provided at the protruding portion.

On the other hand, the lower rail is buried in a concave groove provided in the vehicle floor so as not to protrude above the vehicle floor, so that dust, dirt and the like do not enter the inside from the opening provided in the upper surface of the lower rail. Is fixed to the upper surface of the lower rail so as to cover the opening with a flexible synthetic resin cover with a slit.

[0005]

The above lever swings up and down, and the upper rail having this lever protrudes upward from the opening of the lower rail and slides in the lower rail. Accordingly, the front edge or the rear edge of the lever comes into contact with the cover and acts to bite the cover into the opening of the lower rail below.

As a result, there has been a problem that the cover is damaged and the slidability of the upper rail is impaired. Accordingly, it is an object of the present invention to prevent the cover from being damaged by the unlocking lever and not to impair the slidability of the upper rail.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, a slide rail locking device according to the present invention has a rear edge gradually lowered downward before coming into contact with a cover of a lock release lever. It is characterized by being formed in an enlarged curve.

Therefore, since the front and rear edges of the lever are formed in a downwardly expanding curve, they act to lift the cover upward when the lever is turned vertically or when the upper rail slides. I do.

[0009]

An embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a slide rail having a lock device according to the present invention, in which (1) is a lock piece having a plurality of lock teeth (11), (11) and (11), and is vertically attached to an upper rail (4). It is movably mounted, and the lock teeth (11) descend to lower rails (3).
The upper rail (4) is locked to the lower rail (3) by engaging with a lock hole provided at the bottom of the lower rail (3).

The lower rail (3) has an opening (3
1) is opened in the longitudinal direction, and two soft elastic synthetic resin covers (30) are fixed to the upper surface of the lower rail (3) so as to cover the opening (31).

The upper rail (4) has a conventionally well-known structure having rollers (43) and (43) at the front and rear similarly to the lower rail (3), and the lock piece (1) is partially extended upward. And the lever (2) for releasing the lock tooth (11) from the lock hole and releasing the lock state of the upper rail (4) is pivotally movable in the vertical direction.
It is pivoted in 1).

The projection (40) of the upper rail (4) for pivotally connecting the lever (2) is formed so as to protrude upward from the lower rail (3).
The operation unit (20) is also located above the lower rail (3).

The lever (2) is formed in a U-shape so as to sandwich the projection (40) from the front side, and is pivotally connected to the left and right side surfaces of the projection (40) by the pins (41). The operation part (20) is located on the front side, and the rear end part is engaged in the through hole (12) of the lock piece (1). The lock piece (1) is urged in the lock direction by the elastic force of the spring (5). As shown in FIG. 2, the lever (2) has a front edge (21) and a rear edge (2) where the cover (30) contacts.
2) is formed into a gradually expanding (bulging) curve downward.

When the operating portion (20) is moved downward by an operating member (not shown) provided on the seat side against the resilience of the spring (5), the lever (2) moves the pin (41) in the direction of the arrow. )
Since the rear end pivots upward about the center of rotation, the lock piece (1) moves upward in the direction of the arrow, and the locked state of the upper rail (3) is released.

Since the lever (2) is attached to the upper rail (4), the upper rail (4)
With it, slide forward and backward. The lever (2) is protruded upward from the inside of the lower rail (3) through the slit of the cover (30) at the time of sliding and when the operation section (20) is pushed.

The front and rear edges (21) and (22) of the lever (2) at the protruding portion are formed in a downwardly enlarged curve as described above. Therefore, when the upper rail (4) is slid and the operating portion (20) is pushed, the cover (30) is operated to be lifted upward from below, and the cover (30) is bitten downward. Absent.

[0018]

According to the present invention, when the upper rail is slid and the lever is operated, the lever operates to lift the cover of the lower rail upward from below.
Therefore, since the cover is not bitten by the lever, damage to the cover by the lever can be prevented, and the slidability of the upper rail is not impaired.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a slide rail provided with a lock device according to the present invention.

FIG. 2 is a partially cutaway sectional view of a main part of the present invention.

FIG. 3 is a sectional view taken along the line III-III of FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lock piece 2 Lever 3 Lower rail 4 Upper rail 21 Front edge of lever 22 Rear edge of lever 30 Cover

Claims (2)

[Claims] 1. A lower rail fixed to a vehicle floor, a cover closing an opening provided in a longitudinal direction on an upper surface of the lower rail, an upper rail on a seat side slidably fitted to the lower rail, and a vertical rail mounted on the upper rail. A slide piece having a lock piece movably attached in the direction and engaging with a lock hole of the lower rail, and a lever pivotally swingably attached to the upper rail to move the lock teeth in the vertical direction. A slide rail locking device, wherein a rear end edge is gradually formed in a downwardly enlarged curve before making contact. 2. The slide rail lock device according to claim 1, wherein the lever is formed in a U-shape and is joined to both left and right sides of the upper rail.